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Finding the Fourth Proportional to 352.26, 490 and 345.58

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Solution

The fourth proportional to 352.26, 490 and 345.58 is: 480.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.26 : 490 = 345.58 : x
  2. Step 2: Convert to fraction form
    352.26/490 = 345.58/x
  3. Step 3: Cross multiply
    352.26x = 490 × 345.58
  4. Step 4: Simplify right side
    352.26x = 169,334.20
  5. Step 5: Solve for x
    x = 169,334.20/352.26
  6. Step 6: Final answer
    x = 480.71

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.